Crystal growth and anisotropic thermal properties of the nonlinear and polar oxide Cs2TeW3O12

• The crystallization region of Cs2TeW3O12 in Cs2TeW3O12–TeO2–Cs2O system has been investigated.
• Large Cs2TeW3O12 crystal has been grown.
• Cs2TeW3O12 possesses a large transparent range of 0.415–5.250 μm.
• Cs2TeW3O12 possesses large laser-induced damage threshold of 591.28 MW/cm2.
• Detialed thermal properties have been investigated.

Large crystal of the nonlinear optical and polar oxide Cs2TeW3O12 with a size of 20×15×4 mm3 has been grown by the top-seeded solution growth (TSSG) method. This crystal can be thermally stable up to 808 °C and melts incongruently. It possesses a large transparent range of 0.415–5.250 μm. Thermal properties, including thermal expansion, specific heat, thermal diffusivity and thermal conductivity were investigated. The average linear thermal expansion coefficients were calculated based on the measurement in the temperature range of 30–390 °C. It exhibits strong anisotropic thermal expansion which was discussed according to the relationships between the structure and thermal properties. Furthermore, laser-induced damage threshold has been estimated to be 591.28 MW/cm2 with a laser wavelength of 1064 nm and pulse duration of 8 ns.

The crystallization region of Cs2TeW3O12 single-phase in the quasi-ternary Cs2TeW3O12–TeO2–Cs2O system has been investigated. And Cs2TeW3O12 large crystal has been grown by the top-seeded solution growth method.Figure optionsDownload as PowerPoint slide